Convert Pounds per Square Inch to Kilobars
Convert Pounds per Square Inch (psi) to Kilobars (kbar) instantly and accurately.
Conversion Formula
kbar = psi × 6.894757293e-5
About Pounds per Square Inch
One pound per square inch (psi) ≈ 6,894.76 Pa - the dominant pressure unit in US industry and consumer products. Car tyres: 32-36 psi; truck tyres 80-120 psi; bicycle road tyres 80-130 psi. Home water supply: 40-80 psi; residential maximum 80 psi per plumbing code. Compressed air tools: 90-150 psi. Steam autoclave sterilisation: 15-30 psi. The distinction between gauge (psig) and absolute (psia) pressure is critical: gauge pressure is relative to ambient; absolute = gauge + ~14.696 psi. 1 psi = 6,894.76 Pa.
About Kilobars
A kilobar (kbar) = 1,000 bar = 100 MPa = 10⁸ Pa - standard in high-pressure geophysics and experimental petrology. Earth mantle phase transitions: olivine → wadsleyite at ~130-140 kbar (410 km depth); post-spinel transition at ~230 kbar (660 km). Diamond anvil cells routinely reach 100-400 kbar for materials synthesis and equation-of-state measurement. High-pressure synthesis of cubic boron nitride (~50 kbar) and superhard materials uses large-volume presses. Explosive shock pressures for mining and demolition: 100-1,000 kbar. 1 kbar = 100 MPa.
Quick Reference Table
| Pounds per Square Inch (psi) | Kilobars (kbar) |
|---|---|
| 1 psi | 6.895 × 10-5 kbar |
| 2 psi | 0.000137895 kbar |
| 5 psi | 0.000344738 kbar |
| 10 psi | 0.000689476 kbar |
| 25 psi | 0.00172369 kbar |
| 50 psi | 0.00344738 kbar |
| 100 psi | 0.00689476 kbar |